block access from region

[eluser]WanWizard[/eluser]
The question is, are these people doing it on purpose (i.e. is it a form of spam), do they mis-use your site as a free image uploading site, or do they not understand the meaning of your site?

The action you should take depends on the answer to these questions. Blocking reasons isn't that easy, not difficult to circumvent, and you also block potential legitimate users.